Travel To Fixed Stop - Siemens SIMODRIVE POSMO A User Manual

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5.5.3

Travel to fixed stop

Description A linear or rotary axis can be moved in the closed–loop speed controlled
mode to a fixed endstop using the "travel to fixed stop" function. Upon
reaching a fixed endstop, the defined torque/force is then built up.
This feature can be used, e.g. as follows:
S
S
What should be The following has to be done to traverse to a fixed endstop:
done?
S
S
S
S
What has to be The following has to be observed:
observed?
Note
S
S
S
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SIMODRIVE POSMO A User Manual (POS1) – 08/2013 Edition
To clamp workpieces (e.g. to press the spindle sleeve against the
workpiece)
To approach the mechanical reference point (refer to Chapter 5.5.1)
Set the current to a permissible value for a fixed endstop
– P28 (max. current)
– P16 (max. overcurrent)
Suppress the "speed controller at the endstop" fault
– P30.0 = "1" "speed controller at the endstop" fault
––> is redefined to become a warning
Move to the fixed endstop closed–loop speed–controlled (PSW.0 =
"0" or jogging)
When the endstop is reached, it is displayed as follows:
– ZSW.7 = "1" ––> means "warning present"
and
– P953.7 = "1" ––> means "speed controller at the endstop"
Stop traversing
The "travel to fixed stop" function can only be practically used when
traversing in the closed–loop speed controlled mode (PSW.0 = "0"
or jogging).
For closed–loop position controlled techniques (PSW.0 = "1"), the
"fixed endstop reached" state can only be exited using OFF
commands.
Limit P28 and P16 to values at which torques significantly below
the torque limit occur at the gearbox output.
P28 maximum current
P16 maximum overcurrent
Limit the traversing velocity to a value which is significantly below
the maximum velocity at the rated speed.
5 Description of the Functions
5.5 SIMODRIVE POSMO A functions
= "required current"
= "required overcurrent"
5
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